Battery charger



FIG. 1 is a left front perspective view of the battery charger showing my new design;

FIG. 2 is a front elevation view of the battery charger shown in FIG. 1;

FIG. 3 is a rear elevation view of the battery charger shown in FIG. 1;

FIG. 4 is a right side elevation view of the battery charger shown in FIG. 1;

FIG. 5 is a left side elevation view of the battery charger shown in FIG. 1;

FIG. 6 is a top view of the battery charger shown in FIG. 1; and,

FIG. 7 is a left rear perspective view of the battery charger shown in shown in FIG. 1.

The broken lines depict portions of the battery charger that form no part of the claimed design. 

CLAIM I claim the ornamental design for a battery charger, as shown and described. 